Specification Main rotor diameter: 180mm Overall length: 500mm Overall width: 500mm Drive system: 1225FE33 Battery: 7.4V 800mAh Receiver: RX-2414 Transmitter: WK-2401 Gyro: 3D Gyro All-up weight: 210g(battery included) Features Quarto motors drive make unimaginable stable flight and bring you more fun. Modularized design features convenient maintenance at low cost. Main rotor blades are specially protected by arc-like carbon fiber which effectively prohibits blades. Integrated design of 3D gyro and attitude control provides precise locating in air. Flight time will be up to 8 to 11 minutes on a 7.4V 800mAh Li-Po.